November 7 2003, Wichita Falls, Texas

Carter Announces DARPA Contract

 Wichita Falls, TX  -  Carter Aviation Technologies (Carter) is very pleased to announce that it has been awarded their first contract from the Defense Advanced Research Projects Agency (DARPA).  The contract was awarded to support Carter's development of their next generation propeller and rotor.  Design work for the new prop and rotor has been initiated.

This next generation two bladed rotor is designed for higher-Mu flight.  It will be 45 feet tip-to-tip with 50 sq. ft. of lifting surface and weigh approximately 300 lbs.  Of that weight, 110 lbs is inertia weights located in 'leading edge triangular deltas' at the rotor tips.  The rotor could produce 12,000-lbs of lift at MSL on a standard day.  The ratio of the rotor's weight to an 8,000-lb helicopter would be .0375, which is only 1/2 to 1/3 the rotor weight of most helicopters. The inherent lightweight Carter rotor design permits using a safety factor that is higher than that normally found in helicopters.   

Carter's new, scimitar, 8-foot diameter propeller should be able to absorb 600 hp as a 2-bladed version and 1200 hp as a 4-bladed version.  The highly swept blades will permit the use of higher tip speeds, higher coefficients of lift and thicker, more structurally efficient airfoils without getting into critical mach. This propeller can be optimized for better static and climb efficiencies without losing any noticeable cruise efficiency up through 300 mph. Weight of the 2 bladed version including the pitch change mechanism is expected to be less than 60#.  

The DARPA contract is a one-time agreement to gain a better understanding of Carter's unique propeller and rotor technologies.  The $250,000 in funding will help Carter demonstrate these technologies and gain more test data over a wider spectrum of performance.   Carter is pleased to have DARPA interest in our rotor and propeller technologies.  After more than four years of flight-testing with the original prototype, Carter is committed to moving forward with its next generation aircraft and conquering high-Mu flight